The definition of a LOTO procedure is a set of steps that must be followed in order to safely isolate a piece of equipment or system. This procedure is necessary to ensure that no one is exposed to hazardous energy sources during maintenance, repair, or service activities. LOTO procedures are often used in industrial settings, such as manufacturing plants, and involve the use of special tools and devices to ensure that all sources of energy are locked out and disconnected from the system or equipment. This includes electrical, hydraulic, pneumatic, and other sources of energy. LOTO procedures also include the use of lockout tags, which are placed on the equipment or system to indicate that it is not to be operated until the lockout tags are removed. Additionally, LOTO procedures involve the use of special locks and keys to ensure that only authorized personnel have access to the system or equipment. Following a LOTO procedure is essential for the safety of personnel and equipment, and is a critical part of any safety program.